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a 30-acre field received 4 inches of rain with 35% runoff.Determine the volume of water infiltrated on the field ( assume all the water that doesn't runoff infiltrates )
There are 10 vehicles in a queue when an attendant opens a toll booth. Vehicles arrive at the booth at a rate of 4 per minute. The attendant opens the booth and improves the service rate over time following the function u(t) = 1.1 + .30t, where u(..
The posItIon of a particle along a straight line is given by s = (t 3 - 9t 2 + 1St) ft, where t is in seconds. Determine its maximum acceleration and maximum velocity during the time interval 0 :5: t :5: 10 s.
The "sea-level adjusted" pressure at the airport was about 30.57 inches of mercury. Assuming the density of air is 1.30 kg/m3 and the gas constant for air is 287. J/(kg K), calculate the temperature of the air in Fahrenheit.
A 6.6 mA current is flowing through a 47 kilo-Ohm, 5% tolerance, 2-watt resistor. If the resistor values are uniformly distributed, how many resistors out of a package of 100 would you expect to burn up
The total phosphate concentration (TOTPO4) in a river is 3.2 mg/L as P. The pH of the river is 7.8. What are the concentrations of H2PO4- and HPO42-
Discuss the role of each physical, chemical and biological unit operations and processes employed in the wastewater treatment facility. If this treatment facility is required to supply class A recycle water to those industries for non-potable use
Wastewater is discharged into an aquifer. This wastewater contains 0.1 ppm atrazine (a common herbicide). The MCL of atrazine is 5 ppb, the density is 1.19 g/mL and the solubility is 50 ppm. 500 ft away from the plant effluent there is a permeable..
Two monitoring wells were constructed in an unconfined aquifer. The wells are separated by a distance of 250 ft. The water surface elevations in the up-gradient and down-gradient wells were 101.00 and 100.85 ft, respectively.
A sample of natural glacial till was taken from below the groundwater table. The water content was found to be 52%. Estimate the wet density, dry density, buoyant density, porosity and void ratio. Clearly state any necessary assumptions.
What will the freeway's density and level of service be before and after the ban? (Assume that the trucks are removed and all other traffic attributes are unchanged).
A rancher has 1200 ft of fencing to enclose a double paddock with two rectangular regions of equal areas. find the maximum area that the rancher can enclose.
The flow rate of water flowing in a 3m wide channel is to be measured with a sharp-crested triangular weir 0.5m above the channel bottom with a notch angle of 60°. If the flow depth upstream from the weir is 1.5m
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